Question

4. State the three rules for drawing ray diagrams for spherical mirrors,
5. List the four incident rays and their paths that can be traced after reflection from a
spherical mirror.
Answer 4,5​

Answer 1

Explanation:

4 answer :- The line through the focus passed parallel to principal axis. The Ray passing the centre of curvature good unaffected. Here angle of incidence and angle of reflection are 0°. The Ray hitting the pole of the mirror makes the same angle i.e angle of incidence is equal of reflection

*Sign above the principal axis is taken +ve and below principal axis is taken -ve.

*Sign in the direction of ray is taken +ve and opposite to the direction of ray is taken -ve.

5 answer :-

Rule 1: When a ray of light which is parallel to the principal axis gets reflected, it passes through its focus.

Rule 2: When a ray of light passes through the centre of curvature, it gets reflected back along the same path.

Rule 3: When a ray of light passes through the focus, it becomes parallel to the principal axis after reflection.

Rule 4: A ray of light which is incident at the pole is reflected back making the same angle with the principal axis.

Answer 2

Answer:4) (i) if incident rays is passed through parallel of principal axis then it intersect point focus(f).